摘要
传统意义上基于测井曲线来预测沉积微相的方法已经不能满足密井网下特高含水阶段剩余油分布和井间砂体的精细预测,如何将密井网开发资料与三维地震资料有机结合进行井间砂体的预测就成为当务之急。以大庆油田PN地区典型区块葡萄花油层为例,利用井震结合的方法进行精细沉积微相展布的研究,以原有相带图井点数据为基础,运用测井曲线确定砂岩类型,根据地震属性和反演结果确定砂岩厚度、宽度和连通性,利用沿层切片确定不同时期发育的河道,以单层有效厚度和孔隙度确定砂体发育方向,其成果在实际生产中得到了较好的验证。
In tradition,the methods based on well log forecast of the sedimentary microfacies could not satisfy the prediction of remaining oil distribution and interwell sand bodies in dense well pattern areas at high water-cut stage.How to integrate the dense well data with 3D seismic data to forecast the interwell sands would be the imperative task.The typical block in the PN Area of Daqing Oilfield was taken for example,the method of wells integrating with seismic data was used for studying the distribution of sedimentary micro-facies.Based on the original point data of the logging curve the sandstone thickness,its width and connectivity are determined according to the seismic attributes,inversion results to obtain the river channel developed at different periods by using of slices along the inversion layer,and to determine the direction of sand-body development of sedimentary facies mapping method based on the single-layer of effective thickness and porosity.The results are proven in actual production.
出处
《石油天然气学报》
CAS
CSCD
北大核心
2010年第5期230-234,共5页
Journal of Oil and Gas Technology
关键词
储层预测
地震反演
井震结合
沉积微相
reservoir prediction
geophysics
seismic inversion
impedance
well-seism integration
sedimentary microfacies
